Sam Rothschild Portfolio

SAM ROTHSCHILD P

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srothschild8@gmail.com 2847 N Rockwell, Chigago, IL 412-508-6539

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VIRILE JEWELRY

S TAY D O W N STREETWEAR

intraCool Vest

JEFF WAN x TECHGIRL NFT

nōbi

ABLETON

VIRILE JEWELRY Sam Rothschild

I was commissioned by VIRILE Jewelry to create a product advertisement for their newest silver ring.

I received photos of the ring and instructed to use my own artistic direction to create something meaningful.

To accomplish my vision, I surface modeled the ring using Blender, along with an abstract mirror and pedestal. After applying textures to each object, I added animation, camera motion, and dynamic lighting to bring the scene to life.

The final deliverable was a 15 second animation for Instagram reels.

screenshot of animation product photo

FULL ANIMATION

intraCool Sam Rothschild w

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Justin Sweeney Alexandria Kapko K u v a r j i t S a g a r E r i k H o l m May 2022

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Aug. 2022

background & concept contributions modeling images

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IR imaging

background intraCool is a team of five engineers from Purdue University with a mission to provide comfortable cooling technology in the spotlight of the sun.

Band members, our primary target customer, wear suffocating suits in sweltering conditions. Current solutions pose weight, cost, and performance challenges, creating a need for non-invasive, wearable cooling technology.

The intraCool vest aids thermoregulation, allowing users to surpass physiological limits in extreme conditions. The design comprises a compact aluminum heat exchanger/ water circulator, water-channeled vest, control box, and bladder.*

-Competitor Evaluation-

SONY REON 3 (2022), $190, only neck cooling COMPCOOLER B A C K PA C K COOLING SYSTEM $469, bulky, invasive

concept While flexible materials typically inhibit heat transfer, certain composite materials strike a balance between stiffness and thermal conductivity.

Flexible, conductive materials allow for soft heat exchangers (SHX); wearable technology able to influence heat flux through smooth, elastically deforming surfaces via conduction.

Body temperature regulation devices are useful in many industries, allowing users to maintain a favorable core temperature for longer, including :

- sports/leisure (F1 racing, fitness) - medical (surgeons, patients, robots) - public service (firefighters, officers) - manual labor/engineering (construction) With varying performance targets between groups, current solutions fail to address each’s key functional requirements and criteria, creating market potential for better designs.

intraCool digital twin (render by Sam Rothschild)

U L I N E EVAPORATIVE COOLING VEST, $46, heavy, short duration

*The project can be viewed in its entirety via the link —> This document details several of my major contributions.

Project Results & Final Report Link

contributions

Competitor products such as the COMPCOOLER sacrifice tube conductivity for flexibility in order to maintain skin surface contact given the ‘cartesian’ based channel configurations they use, which lack torso movement ergonomics.

As head of analysis, I modeled the heat transfer process between the vest and skin to develop working models and create performance tests/benchmarks.

I also performed FEA analysis using Ansys to assess mixing within the heat exchanger for optimal heat transfer.

Thermal Resistance Network

All performance targets, validation tests, and results can be found in the report link.

The intraCool vest water channels undergo far less deformation than other designs and expand/ contract uniformly with the ribcage, maintaining a snug fit via the elastic buckle straps.

Maximum Flow Rate CFD I designed the entire vest subsystem and co-designed the heat exchanger. An H2 FEP composite material was chosen as the vest tubing for its uniquely high thermal conductivity and thermoset properties.

Vest Digital Twin (Blender)

Noticing this trend, I started by surface modeling a torso and finding concentric curves with enough surface area contact and minimum curving radius/ turns to elicit sufficient heat transfer, be kink resistant, and minimize head-loss.

I devised a low-cost manufacturing process for the soft body vest. A dress form was made by wrapping the torso of team member Erik (5’9’’ 160 lbs) in duct tape.

Lastly, I created a 1:1 digital twin of the final prototype in Blender and a 360° animation.

vest manufacturing process

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After creating a back seam with shears, the surface was removed, resealed, and filled with paper mache. The H2 FEP tubes were held in place with pins and thermoset using a heat gun at 100 °C, monitored with thermocouples to ensure setting and prevent melting. user image (me)

6 different PLA connectors were designed to maintain the vest shape and hold elastic straps in place. The cord length was iterated in order to prevent slip conditions via an annular fit.

Thermal Images of cooling and heating modes (left and right, respectively)

modeling & images Temperature Data Collection

Heat Exchanger Subsystem Design

time (s)

The product produces viable cooling and heating effects, transferring +62 W and -33 W during our heating and cooling tests, respectively, and exceeding the target.

Aluminum Water Circulator User Control Subsystem Design

With the addition of an integrated circuit in mass production, the size of the circuit box is drastically reduced, therefore fulfilling sizing constraints. Additionally, the product fulfills weight, ergonomic, and duration targets.

The product proposes an effective solution for portable microclimate management. With an estimated commercial cost of $180, it is priced competitively against benchmark cooling vests (Appendix 2E in report).

Given the success of validation results, intraCool is ready to take the product into the next phase, which includes implementing minor changes in order to prepare for large-scale manufacturing and commercialization.

BOTTOM is fixed to encoder via the usb-c port.

Electronics Schematic

Validation Test Results

nōbi storyboard d e s i g n

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Sam Rothschild A u g . 2 0 2 2 - M a r. 2 0 2 3

concept & background material selection coding & testing modeling & prototype

42’’ large analog instrument are priced ~$1,000+ due to limited supply and analog architecture

background Controllers have become increasingly modular, subdividing the functions of bulky products into smaller, workflowenhancing products.

A good controller has an appropriate resolution and range of motion to adjust values with minimal movement.

4.2

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ROLAND JUNO-60, 1982

MIDI devices control the software equivalent of analog synthesizers

Knobs are prevalent because their angular position can adjust between 0% and 100% of a parameter’s value efficiently.

5’’

INTECH STUDIO PO-16, 2018

pocket-sized resamplers collapse the functions of older bulky predecessors, i.e. Akai MPC

While analog knobs are confined to single parameters, digital knobs can be mapped to many software parameters, hosting vaster functionality.

TEENAGE ENGINEERING POCKET OPERATOR, 2015

12x10’’

concept 0.75’’

AKAI MPC, 2000

NOBI is a non-invasive lifestyle product stripped of all functions extraneous to parameter mapping.

Keyring attachable, the form factor enables it to be a portable usb-c controller and playful fidget toy.

After noticing an encoder can be directly soldered onto the QT Py by using an analog pin as a fake ground, I found no product taking advantage of this and began the design process.

NOBI (concept), 2022

NOBI is used by several accomplished electronic musicians today, a novel and sensible addition to any artist’s keychain.

coding & testing

material selection QT Py RP2040 QT Py RP2040 is the smallest chip with MIDI capabilities/an on-board LED. The LED is used as a power signifier without sacrificing form factor. Changing color and blink speeds, it can create additional operational signifiers for more functions.

$9.95/unit* Bourn’s PEC11

Several Arduino libraries were implemented for the controller to function. The refresh rate was iterated upon to reduce CPU requirements.

Python script converting encoder position to MIDI stream:

A Bourn’s PEC11 digital rotary encoder was chosen over analog potentiometers for enhanced durability, reliability, and full angle rotation. opaque body

$3.95/unit

Clear PLA

$0.13/unit Leather String

Clear PLA was chosen through initial customer feedback. With some users preferring no body after an opaque body was prototyped, a clear body was unanimously preferred to both.

Leather String is low-cost and aesthetic. The final design decision, it is an affordance to the product’s identity; simple, non-invasive , and utilitarian.

clear body

From Swiss army knives and bottle openers to memorabilia and fashion accessories, The device was personally tested using Ableton Live on a MacBook

“Keychains can be personal treasures or miniature extensions of our identity” -

Pro for several weeks, fulfilling functional requirements. Operational after a complete washer/dryer cycle (oops), NOBi exceeds durability expectations.

‘The Psychology of Keychains’ by Erika Houle (https://tinyurl.com/4x65zr5x)

$0.10/unit *costs listed are retail prices

modeling & prototype

y Nobi’s design requires no fasteners. The chip must be tilted into the bottom piece to thread the usb-c port through the mouth, freeing up space for the tail to be lowered.

Created in Autodesk Fusion 360 R4

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tilt.

NOBI TITLE

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TOP APPROVED

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Sam Rothschild

8.10.22 SCALE 2:1

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BOTTOM is fixed to encoder via the usb-c port.

BOTTOM is fixed to TOP via an annular fit.

TOP is fixed to encoder via the screw.

REV

SHEET 1/1

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Created in Blender 3.4*

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24.5 3.75 1.5

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Parts were sanded with 1600 grit and finished with floor sealer to increase transparency.

Layer lines remain visible despite post processing. Injection molding would yield cleaner results.

R2.5

PROJECT

NOBI TITLE

BOTTOM (1:1 REFERENCE) APPROVED

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8.09.22 SCALE 2:1

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*original surface modeling & textures (except QT Py) SHEET 1/1

S T A Y D O W N S T R E E T W E A R S a m

render

R o t h s c h i l d

concept Staydown is a clothing LLC looking to elevate their brand in the streetwear market.

I was commissioned to create a 10 second 3D animation of their latest collection before the launch announcement, where it will be worn by Washington Wizards players in front of NBA media.

Beginning the creative process, I learned the client’s aesthetic goals and determined appropriate symbolism, relating the brand with their new line. Concept generation lead to several key identifiers, and a scene was chosen to bring cohesion to the symbolism.

HDR, film grain and camera sway were added to further enhance realism. Animation was performed on the ambient/ sunlight, record player, butterflies, plants, and flowers.

*crepuscular rays (“god rays”) are sunbeams from below the horizon, or twilight, creating columns of illuminated air contrasting with darker, occluded areas.

*Brand Logo*

Pour Tous - ‘freedom for everyone’ defines the new line, sparking themes of individuality and ‘creating ones freedom’. The location was chosen as concrete slabs with a single opening for light, creating a ‘god rays’ effect.*

post from the Washington W i z a r d s instagram

The minimalistic, secluded scene holds a few intimate objects meant to bring comfort and familiarity to an otherwise cold environment, suggesting freedom is brought through identifying with hobbies and joys extrinsic to inherited circumstances.

Vines and Weeds chaos, entropy, life, enhances murkiness of concrete/rust setting.

The animation generated 10,000 views in 4 days.

Flying Flower Pedals introduces wonder/ supernatural element into scene

Skateboard - recurring streetwear symbolism, universal symbol of rebellion and youth.

Included logo brand and line logo with collaborator’s signature

Monarch Butterflies recurring symbolism from first designs spark thoughts of strength, endurance, spirituality, transformation, evolution.

The scene includes a mix of assets and original surface modeling/textures.

The scene was scored in Ableton Live using Brent Faiyaz’s - “Staydown”. The pitch is automated upwards to add a dream-like feeling and doppler-effect realism. Additional psychoacoustic realism was added through convolution filtering to better mimic the echoic concrete environment.

R e c o rd P l a y e r continuity/realism combined with animation and SFX scoring. vintage/ nostalgic element.

In total, 19 separate audio files were mixed with FX automation, including nature ambience, city ambience, vinyl noise, and machine noise.

*STILL FRAME* Ableton Live Score

Carpet - adds comfort/ decoration to the scene

FULL ANIMATION

JEFF WAN X TECH GIRL NFT PROJECT S a m

R o t h s c h i l d

I was commissioned to create five NFT’s for award-winning handbag designer Jeff Wan and web3 Dao Tech Girl. I recreated Wan’s iconic lunchbox design in Blender with five unique backdrops to represent major cities. I also produced five beats to bring each NFT to life. The animations can be found at the links below: https://www.jeffwan.com https://www.techgirlnyu.com

"With this NFT capsule collection, we invite you to discover different cities, fulfill your curiosity by connecting with individuals across the globe and by traveling everywhere and anywhere all at once in the metaverse.

You can purchase a Lunch Box bag from the Fall collection + an NFT for $250! The NFT is also available to purchase for $100. (jeffwan.com & techgirlnyu.com) A portion of the proceeds are going to scholarships for underprivileged girls with an interest in technology.”